Steve Hand

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ii I certify that I have read this dissertation and that, in my opinion, it is fully adequate in scope and quality as a dissertation for the degree of Doctor of Philosophy. I certify that I have read this dissertation and that, in my opinion, it is fully adequate in scope and quality as a dissertation for the degree of Doctor of Philosophy. I certify that I(More)
This is a project to carry out research into long-term GRID architecture, in the University of Cam-bridge Computer Laboratory and the Cambridge eScience Center, with support from the Microsoft Research Laboratory, Cambridge. It is part of a larger vision for future systems architectures for public computing platforms, including both scientific GRID and(More)
This paper investigates the effect of mobile phone screen size (1.65 inches-2.75 inches) on video based learning. It first examines the educational benefits of video as a teaching medium and surveys the usage and issues related with video based learning. After which, it investigates the value of video for mobile learning. It reports on an empirical(More)
Simultaneous multithreaded (SMT) processors are able to execute multiple application threads in parallel in order to improve the utilisation of the processor's execution resources. The improved utilisation provides a higher processor-wide throughput at the expense of the performance of each individual thread. Simultaneous multithreading has recently been(More)
Music or sound effects are often used to enhance Virtual Environments, but it is not known how this audio may influence gait speed. This study investigated the influence of audio cue tempo on treadmill walking with and without visual flow. The walking speeds of 11 individuals were recorded during exposure to a range of audio cue rates. There was a(More)
Virtual Reality is being used increasingly for upper limb rehabilitation. The type of virtual objects used for reaching tasks varies widely, but there has been little work exploring the effect of different characteristics of objects on target acquisition time. This study investigates how target acquisition times vary for virtual objects with different(More)
(and their matched re-entries into guest-operating mode) can lead to performance degradation of 30%–50% for network intensive workloads. This observation leads directly to the au-thors' idea: Exitless Interrupts (ELI). Their solution comes in two parts. The first technique is to configure the system to deliver all interrupts directly to the virtual machine(More)